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ID this thing please

698 views 2 replies 2 participants last post by  mciaio  
#1 ·
I thought this thing was Aiptasia but I havevn't found any picture that look like it yet. It was brought into the tank on live rock. They do not move they will hide in the white, hard "tube" when I knock the tank. There are 3 of them and they are very small. The polyp is only the size of a pea when opened up. The whole thing can fit under a half-dollar coin. The "tube" looks more like a coral base than an anemone. What is it?
 

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